commit https://github.com/vim/vim/commit/cf619daa8e0ef9a335f27f65eb74e422a17d4f92 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Sep 1 20:53:24 2015 +0200 patch 7.4.853 Problem: "zt" in diff mode does not always work properly. (Gary Johnson) Solution: Don't count filler lines twice. (Christian Brabandt)

For information about installation of Farsi fonts and Vim usage in Farsi mode,
refer to the Farsi help file by typing ":help farsi" in Vim.